"it seems that the problem is not related to the specific software used by the site but to the hosting management platform used by the provider"

and

"It is not a DoS attack, the website is not the real target of the attack. The attacked website is just a tool to alter the relevance of words in the Web. The attacker’s interest is that the attacked website continues working without visible alterations."

Obviously different from gumblar and this explains why none of the PC-oriented AV products seem to be aware of it since PCs are not affected by it.